JP6478143B2 - Keyboard instrument - Google Patents

Description

  The present invention relates to a keyboard instrument such as an electronic piano, and more particularly to a keyboard instrument capable of generating a scent at the same time as a musical tone is emitted when a key is pressed.

  Among conventional keyboard instruments such as electronic pianos, there are ones capable of generating a scent at the same time as a musical tone is emitted when a key is pressed (see, for example, Patent Document 1). In the keyboard instrument described in Patent Document 1, the aromatic agent is contained in a cylindrical aromatic agent container, the air inlet is provided at one end of the aromatic agent container, and the air outlet is provided at the other end of the aromatic agent container. When the key is pressed, air is flowed into the fragrance container from the air inlet, and the scent of the fragrance in the fragrance container is discharged from the air outlet together with the introduced air, whereby the key is pressed. At the same time, a musical tone can be generated and a scent can be generated at the same time.

Japanese Patent Application Publication No. 2003-260122

  However, in the above-mentioned conventional keyboard instrument, since the fragrance is simply contained in the fragrance container having the air inlet at one end and the air outlet at the other end, the key is pressed. Even in such a state, the smell of the fragrance in the fragrance container leaks to the outside from at least the air outlet, and there is a problem that the life of the fragrance in the fragrance container becomes short.

  Therefore, an object of the present invention is to provide a keyboard instrument capable of preventing the scent of the fragrance in the fragrance container from leaking out when the key is not pressed.

The present invention is provided corresponding to at least one of a plurality of keys, a sound generation unit generating a musical tone in response to a key depression operation on any of the plurality of keys, and containing a fragrance agent. And the fragrance containing recess is closed when the key is in the non-keying state, and the fragrance containing recess is opened when the key is in the keying state. And a fragrance container .

  According to the present invention, since the fragrance containing recess of the fragrance container is closed in a state in which the key is not pressed, the smell of the fragrance in the fragrance containing recess in the fragrance container is obtained in the state in which the key is not pressed. It can be prevented from leaking out.

BRIEF DESCRIPTION OF THE DRAWINGS The transversal sectional view which cut off a part of principal part of the keyboard instrument as one Embodiment of this invention. FIG. 2 is a cross-sectional view substantially along the line II-II in FIG. The rear view seen from the right of FIG. 1 and FIG. (A) is a plan view of a part of the fragrance container, (B) is a side view seen from the bottom of the figure (A), (C) is a side view seen from the left of the figure (A). FIG. 5 is a partial cross-sectional view taken along the line V-V of FIG. 2; Sectional drawing similar to FIG. 2 when white key is pressed. Sectional drawing similar to FIG. 5 when white key is pressed.

  FIG. 1 shows a partially cut away cross-sectional view of the main part of a keyboard instrument according to an embodiment of the present invention, FIG. 2 shows a cross-sectional view substantially along line II-II in FIG. Figure 3 shows a rear view from the right of Figures 1 and 2; Here, FIG. 1 is a cross-sectional view substantially along the line I-I of FIG. This keyboard instrument has an instrument body case 1.

  This will be described below with reference to FIG. The instrument body case 1 includes a main front plate 2, a back plate 3 taller than the main front plate 2, a bottom plate 4 provided between the lower portion of the main front plate 2 and the lower portion of the back plate 3, and A substantially L-shaped left side plate 5 provided on the left side (the rear side in FIG. 2) of the front plate 2, the rear plate 3 and the bottom plate 4 and the upper portion of the front portion (left in FIG. 2) A substantially L-shaped right side plate (not shown) provided on the right side (the front side in FIG. 2) of the front plate 2, the rear plate 3 and the bottom plate 4 and the upper portion of the front portion is notched A sub-front plate 6 provided between the front of the upper half substantially and the front of the upper half of the right-hand side, and the upper side of the sub-front 6, the rear 3, the left 5 and the right It consists of an upper plate 7. In the instrument body case 1, the upper side between the front portion of the lower half of the left side plate 5 and the front portion of the lower half of the right side plate is opened to form an opening 8.

  A keyboard chassis 11 is provided on the upper surface of the bottom plate 4. At the central portion of the upper surface of the keyboard chassis 11 in the front-rear direction (left and right direction in FIG. 2), a plurality of key support protrusions 12 are provided at intervals in the left and right direction (vertical direction in FIG. 1). A circular hole 13 is provided at the central portion of the key support projection 12. One key support shaft 14 is inserted through the circular holes 13 of the plurality of key support protrusions 12. The key support shaft 14 is mounted at the center of each of the plurality of keys.

  The key support shaft 14 is attached to the central portion of the plurality of white keys 15 so that the white keys 15 can be vertically moved. That is, the white key 15 can move up and down around the key support protrusion 12 and the key support shaft 14 in response to the key depression operation. The plurality of white keys 15 and the plurality of black keys 16 are juxtaposed in the left-right direction (vertical direction in FIG. 1) as expected. The tip side of the white key 15 and the tip side of the black key 16 are exposed to the outside of the instrument body case 1. Hereinafter, the white key 15 will be described, and the description of the black key 16 will be omitted.

  A switch pressing projection 17 is provided on the lower surface of the white key 15 on the front side (left side in FIG. 2) of the key support shaft 14. Below the switch pressing projection 17, a self-resetting rubber switch 18 is provided as a key pressing detection switch for detecting that the white key 15 is pressed. The rubber switch 18 is provided on the upper surface of the circuit board 19 provided on the upper surface of the keyboard chassis 11. A tone generator circuit (sound generating unit) 20 for generating a musical tone is provided on the circuit board 19. A coil spring 21 is provided between the lower end of the white key 15 and the upper surface of the keyboard chassis 11. On the lower surface of the rear end portion of the white key 15, a strip-shaped recess 22 for closing the fragrance container is provided.

  A groove 31 for containing a fragrance container is provided on the upper surface of the keyboard chassis 11 below the fragrance container closing recess 22 of the white key 15 from one end of the keyboard chassis 11 to the other end. The rear side (right side in FIG. 2) of the fragrance container accommodation groove 31 is open. A plurality of strip-shaped openings 32 (see FIG. 3) are provided at intervals in the rear plate 3 behind the fragrance container accommodation groove 31. A fragrance container 33 is housed in the portion for the fragrance container housing groove 31 of the keyboard chassis 11 and the opening portion 32 of the back plate 3. In other words, the fragrance container 33 is provided below the rear end of the white key 15 inside the instrument body case 1.

  A plurality of the fragrance container accommodation grooves 31 of the keyboard chassis 11 may be provided at intervals corresponding to the plurality of openings 32 of the back plate 3. Further, the opening 32 of the back plate 3 may be an elongated opening corresponding to one of the fragrance container accommodation grooves 31 of the keyboard chassis 11.

  Here, FIG. 4 (A) shows a plan view of a part of the fragrance container 33, FIG. 4 (B) shows a side view as viewed from the bottom of FIG. 4 (A), and FIG. The side view seen from the left of 4 (A) is shown. The fragrance container 33 includes a container body 34 having a flat rectangular shape. A plurality of strip-shaped fragrance-containing recesses 35 whose upper side is released are provided on the upper surface side of the container half substantially at the left half thereof at an interval in the vertical direction in FIG. 4 (A). That is, the single fragrance container 33 corresponds to a plurality of keys, and has the same number of fragrance housing recesses 35 as the plurality of keys in the parallel direction of the keys. Although the number of the fragrance containing recesses 35 of one fragrance container 33 is not particularly limited, for example, when one fragrance container 33 corresponds to one octave, a key for one octave and It is eight of the same number.

  A guide groove 36 is provided on the upper surface side of the container main body 34 between the adjacent aromatic substance containing concave portions 35. A key relief groove 37 having the same depth as that of the guide groove 36 is provided on the upper surface side of the container main body 34 on the right side of the fragrance containing recess. Handles 38 (see FIGS. 1 and 3) are provided at both ends of the right side surface of the container body 34. A mounting plate 39 is provided on the upper surface of the right end portion of the container body 34. At both ends of the mounting plate 39, screw holes 40 are provided.

  Returning to FIG. 2, the description will be continued. The fragrance container 33 accommodated in the fragrance container accommodation groove 31 of the keyboard chassis 11 and the opening 32 of the back plate 3 is inserted into the screw insertion circular hole 40 (see FIG. 4) of the mounting plate 39. The screw 41 is screwed to the back side of the back plate 3 so that it is removably attached. In this state, at least a portion of the fragrance containing recess 35 of the fragrance container 33 is provided inside the instrument body case 1. The fragrance 42 is contained in the fragrance containing recess 35 of the fragrance container 33. The fragrance agent 42 is made of a water absorbent resin, a gel-like one, a solid one such as soap, or the like.

  Here, FIG. 5 shows a partial cross-sectional view along the line V-V of FIG. By providing a strip-shaped recess 22 for closing the fragrance container on the lower surface of the rear end portion of the white key 15, a substantially U-shaped flat surface is formed on the left and right sides and the rear side of the lower surface A projection 23 (see FIG. 2) is provided. Among these, the projections 23 on the left and right sides are inserted into the guide grooves 36 of the fragrance container 33, and the projections 23 on the rear side are inserted into the key relief grooves 37 (see FIG. 2) of the fragrance container 33.

  In this case, the adjacent (left and right) projections 23 of two adjacent white keys 15 are inserted together into one guide groove 36 of the fragrance container 33. One of the projections 23 on the left and right sides of the white key 15 disposed at a position corresponding to the end of the fragrance container 33 is along the end face of the fragrance container 33.

  Returning to FIG. 2, the description will be continued. A fan 51 is provided inside the instrument body case 1 above the rear end of the white key 15. As shown in FIG. 1, the fan 51 is a square in plan view and has an impeller 54 provided in a case 53 having circular holes 52 at the top and bottom. The number of the fans 51 is the same as the number of the fragrance containers 33, and is provided above the central portion of each of the fragrance containers 33. The fan 51 is attached by a screw 57 to the upper surface of a substantially L-shaped mounting bracket 56 attached to the inner surface of the back plate 3 by a screw 55. A circular hole 58 is provided at the center of a portion of the mounting bracket 56 to which the fan 51 is attached.

  A sound output hole 61 is provided in the upper plate 7 above the fan 51. A net 62 is provided on the upper plate 7 outside the sound output hole 61. A sound emitting hole 63 is provided at a predetermined position of the auxiliary front plate 6. A speaker 64 is provided on the inner surface of the auxiliary front plate 6 inside the sound output hole 63. The speaker 64 is electrically connected to the tone generator circuit 20 and emits musical tones generated by the tone generator circuit 20. A net 65 is provided on the auxiliary front plate 6 outside the sound output hole 63.

  In this keyboard instrument, as shown in FIGS. 2 and 5 when the white key 15 is not pressed. Referring to FIG. 2, the white key 15 is urged clockwise by the force of the coil spring 21, but the back surface of the air agent container closing recess 22 of the white key 15 is the fragrance of the fragrance container 33. By being in contact with the upper surface of the periphery of the agent accommodation recess 35, the predetermined initial position is positioned. In this state, the switch pressing projection 17 of the white key 15 is located above the rubber switch 18, and the rubber switch 18 is in the off state.

  Thus, in this keyboard instrument, the back surface of the recess 22 for closing the fragrance container of the white key 15 abuts on the upper surface of the recess 35 of the fragrance container 33 in the state where the white key 15 is not pressed. Since it has been done (refer to FIG. 5), the fragrance containing recess 35 of the fragrance container 33 is closed by the back surface of the fragrance container closing recess 22 of the white key 15. As a result, in a state where the white key 15 is not pressed, the scent of the fragrance 42 in the fragrance containing recess 35 of the fragrance container 33 can be prevented from leaking to the outside, and hence the fragrance of the fragrance container 33 It is possible to prevent the service life of the fragrance 42 in the accommodation recess 35 from being shortened.

  In addition, since the back surface of the fragrance container closing recess 22 of the white key 15 is in contact with the upper surface around the fragrance storing recess 35 of the fragrance container 33, the white container 15 has the recess 22 for the fragrance container closing. Compared with the case where the flat lower surface of the rear end portion of the white key 15 is simply brought into contact with the upper surface around the fragrance containing recess 35 of the fragrance container 33 without providing the fragrance of the fragrance container 33 It is possible to make it difficult for the aromatic agent 42 in the accommodation recess 35 to touch the air around the rear end of the white key 15, and consequently, it is possible for the aroma of the aromatic agent 42 to be unlikely to leak to the outside.

  Here, when there is a variation in the height position of the upper surface around the fragrance containing recess 35 of the fragrance container 33, the flat back surface of the fragrance container closing recess 22 of the white key 15 is the fragrance container 33. When it comes in contact with the uneven upper surface around the fragrance containing recess 35, a gap is locally generated. However, since the periphery of the upper surface with the above-mentioned variation can be covered with the inner peripheral surface of the recess 22 for closing the fragrance container of the white key 15 (see FIG. 5), the inside of the fragrance containing recess 35 of the fragrance container 33 It is possible to make it difficult for the fragrance 42 to come in contact with the air around the rear end portion of the white key 15, and, consequently, it is possible to prevent the fragrance of the fragrance 42 from leaking out. In the white key 15, the protrusions 23 on the left and right sides may be omitted.

  Further, in this keyboard instrument, one fragrance container 33 is provided with a plurality of fragrance containing recesses 35, and one fragrance container 33 can correspond to a plurality of keys. The number of parts can be significantly reduced as compared with the case where the agent container corresponds to one key, and the replacement operation of the fragrance container 33 described later can be simplified.

  Next, the case where the white key 15 is pressed will be described. When the white key 15 is pressed, it becomes as shown in FIG. 7 which is a sectional view similar to FIG. 2 and FIG. 7 which is a sectional view similar to FIG. Referring to FIG. 6, the white key 15 is turned counterclockwise against the force of the coil spring 21, and the switch pressing projection 17 presses the rubber switch 18. Then, the rubber switch 18 is turned on, and key-on data for instructing the tone generator circuit 20 to start tone generation is obtained. As a result, a tone corresponding to the pressed white key 15 is emitted from the speaker 64. The musical tone emitted from the speaker 64 is emitted to the front of the auxiliary front plate 6 through the sound output hole 63 and net 65 of the auxiliary front plate 6, and the upper plate through the sound output hole 61 of the upper plate 7 and the net 62. It is emitted above 7

  When the white key 15 is pressed, the back surface of the fragrance container closing recess 22 of the white key 15 is positioned above the upper surface of the fragrance container 33 around the fragrance containing recess 35 (FIG. 7). reference). Then, the closure of the fragrance container 33 with respect to the fragrance storage recess 35 by the back surface of the fragrance container closure recess 22 of the white key 15 is released, and the smell of the fragrance 42 in the fragrance storage recess 35 of the fragrance container 33. Is diffused around the rear end of the pressed white key 15.

  Here, the fan 51 is driven and stopped by turning on and off the power switch (not shown) of the keyboard instrument. At this time, since the power switch is in the on state, the fan 51 is driven. Therefore, the scent of the fragrance 42 diffused around the rear end of the pressed white key 15 is guided by the fan 51 toward the sound release hole 61 of the upper plate 7, and through the sound release hole 61 and the net 62. It is diffused above the upper plate 7. As a result, when the white key 15 is pressed, it is possible to generate a scent at the same time as the tone is emitted. In this case, since the sound release hole 61 of the upper plate 7 is used as a discharge hole, it is not necessary to provide the discharge hole for exclusive use.

  Next, the case where the key depression operation on the white key 15 is released will be described. When the key pressing operation on the white key 15 is released, as shown in FIG. 2, the white key 15 is rotated clockwise by the force of the coil spring 21, and the back surface of the fragrance container closing recess 22 of the white key 15 Is returned to a predetermined initial position by abutting on the upper surface around the fragrance containing recess 35 of the fragrance container 33. In this state, the switch pressing projection 17 of the white key 15 is located above the rubber switch 18, and the rubber switch 18 is self-returned and turned off.

  Next, the case where the life of the fragrance 42 in the fragrance container 33 is over and the fragrance container 33 is replaced will be described with reference to FIG. In this case, the screw 41 is removed first. Next, with the white key 15 and the black key 16 corresponding to the fragrance container 33 to be replaced held down, the handle 38 of the fragrance container 33 is pinched and pulled out, and the fragrance container 33 is on the back side of the back plate 3 Take out of the

  Next, the fragrance container 33 having a fresh, ie, non-volatile, fragrance 42 is accommodated in the fragrance container accommodation groove 31 of the keyboard chassis 11 and the opening 32 of the back plate 3. Next, the screw 41 inserted into the screw insertion circular hole 40 (see FIG. 4) of the mounting plate 39 of the fragrance container 33 is screwed into the back side of the back plate 3. Next, the pressing on the white key 15 and the black key 16 corresponding to the replaced fragrance container 33 is released. Thus, the replacement work of the fragrance container 33 is completed. Thus, in this keyboard instrument, it is possible to replace the fragrance container 33 having the expired fragrance 42 with a fragrance container 33 having the fresh, ie non-volatile, fragrance 42.

  Here, the fragrance of the fragrance 42 contained in the fragrance containing recess 35 of the fragrance container 33 may be of one type, or may be of a different type for each key. Further, in the case where one fragrance container 33 corresponds to one octave, it is possible to make the fragrance of the fragrance 42 different in each octave.

  As mentioned above, although one Embodiment of this invention was described, this invention is not limited to this, The invention described in the claim, and the range of equivalence are included.

Hereinafter, the invention described in the original claim of this application is added.
(Supplementary note)
The invention according to claim 1 is provided corresponding to at least one of a plurality of keys, a sound generation unit generating a musical tone in response to a key depression operation on any of the plurality of keys, and at least one of the plurality of keys. And an aromatic agent accommodating concave portion capable of accommodating an aromatic agent, and the aromatic agent accommodating concave portion is closed when the key is in the non-key depression state, and the aromatic agent accommodation when the key is in the key depression state And a fragrance container in which the recess is in an open state.

  The invention according to claim 2 is the keyboard musical instrument according to claim 1, wherein the keyboard musical instrument is further provided with a key supporting projection provided on the bottom plate of the keyboard musical instrument and the key supporting projection. A key support shaft, the key support shaft being attached to a central portion of each of the plurality of keys, the rear end portion of the key closing the air agent containing recess and pressing the front end portion of the key The keyboard instrument is characterized in that, in response to a key operation, a rear end portion of the key moves upward around the key support shaft to open the fragrance containing recess.

  The invention according to claim 3 is the keyboard instrument according to claim 2, wherein a recess for a fragrance container closure is provided on the lower surface of the rear end of the key at a position corresponding to the fragrance accommodation recess, When the key is in the non-key depression state, the back surface of the fragrance container closing recess of the key is in contact with the upper surface around the fragrance containing recess of the fragrance container. .

  The invention according to claim 4 is the keyboard instrument according to any one of claims 1 to 3, wherein the keyboard instrument comprises an instrument body case accommodating at least a rear end portion of the plurality of keys and the fragrance container. The keyboard container is characterized in that the fragrance container is configured to be removable from the back side of the instrument case to the outside.

  The invention according to claim 5 is characterized in that, in the keyboard instrument according to claim 4, the keyboard instrument further has a fan provided in the instrument case and above the rear end of the key. It is a keyboard instrument that

  The invention according to claim 6 relates to the keyboard instrument according to any one of claims 1 to 5, wherein the fragrance container is a key corresponding to the fragrance container and the fragrance adjacent to the key It is a keyboard instrument characterized by having an accommodation crevice.

1 instrument body case 15 white key 16 black key 20 sound source circuit
Reference numeral 22 air freshener container closing recess 33 air freshener container 35 air freshener containing recess 42 air freshener 51 fan 61 sound emitting hole

Claims (6)

With multiple keys,
A sound generation unit that generates a musical tone in response to a key depression operation on any of the plurality of keys;
The fragrance containing recess is provided corresponding to at least one of the plurality of keys and can contain a fragrance, and when the key is in the non-key depression state, the fragrance containing recess is closed, A fragrance container in which the fragrance containing recess is open when the key is in the key depression state;
A keyboard instrument characterized by comprising. In the keyboard instrument according to claim 1,
The keyboard instrument further includes a key support protrusion provided on a bottom plate of the keyboard instrument, and a key support shaft provided on the key support protrusion.
The key support shaft is attached to a central portion of each of the plurality of keys.
While closing the fragrance containing recess at the rear end of the key, the rear end of the key moves upward around the key support shaft in response to a key depression operation on the front end of the key. A keyboard instrument characterized in that the air freshener containing recess is opened. In the keyboard instrument according to claim 2,
The lower surface of the rear end portion of the key is provided with a recess for closing a freshener container at a position corresponding to the freshener accommodating recess,
When the key is in the non-key depression state, the back surface of the fragrance container closing recess of the key is in contact with the upper surface of the fragrance container recess around the fragrance containing recess. In the keyboard instrument according to any one of claims 1 to 3,
The keyboard instrument has an instrument body case that accommodates at least the rear ends of the plurality of keys and the fragrance container.
The keyboard instrument, wherein the fragrance container is configured to be removable from the back side of the instrument case to the outside. In the keyboard instrument according to claim 4,
The keyboard instrument further comprises a fan provided in the instrument body case and above the rear end of the key. In the keyboard instrument according to any one of claims 1 to 5,
A keyboard instrument, wherein the fragrance container has a key corresponding to the fragrance container and the fragrance containing recess in a key adjacent to the key.

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